In PWRs - a different LWR system - control rods are withdrawn from the core, and the control is acheived with soluble B-10 in the coolant (which is buffered with LiOH) to maintain a pH above 6.9 or perhaps closer to 7.1 - 7.4 for purposes of minimizing the accumulation of crud (metal corrosion products) on the fuel.
Rhetorical patterns have an additional function of helping writers to organize information in ways their readers can understand easily (425). Another term for these patterns is topoi (commonplaces). Many of these topoi are useful in numerous situations.
There are many definitions available. As a scholar of rhetoric, I offer my current definition. Rhetoric is the study and practice of communication that persuades, informs, inspires, or entertains target audiences in order to change or reinforce beliefs, values, habits or actions. Formal study of rhetorical theory, criticism, history, and practice â This is usually facilitated through Rhetoric courses at an institution of higher education, or through a speaking or debate club or corporate workshop that incorporates the rhetorical tradition.